Self-acting valve for pumps and similar devices.



BEST CUPY P. BRENNER & 0. 'H'OFEMANN; SELF ACTING VALVE FOR PUMPS AND SIMILAR DEVICES. APPLICATION FILED D\, E0.'31, 1908.

1,027,587. Patented May 28, 1912. I

'To azLfltlhqm'it may concern:

vices, of which the UNITED sures ATENT ornron.

Be t known that we, PAUL BRENNER and one HOFFMANN, citizens of the German Empire, both residing at \Valzenstras'se No. 52, Duisburg, in the*Ptovince of Rhineland and Kingdom of Pruss a, Germany, have invented new and useful Improvements in Self- Acting Valves for,]?u'mps and Similar Defollowing is a specification.

The object of the resent invention is a self-acting valve for; pumps, blowing machines and compressors the closing-member of which is arranged and shaped in such a manner, that its free play is not checked by the current of the liquid passing through, that it is light, that is to say, practically non-bulky and requires but a slight springload, offering consequently only a minimum of resistance to the passage' bf the liquid.

In the accompanying drawing, in which similar letters refer to similar parts throughout the several views, different forms of embodiment are representedin the Figures 1 to 6, all of which show the new valve in longitudinal section.

In the form of construction of the Fig, 1, the closing-member consists of two rigid ring-shaped organs or lips a made of thin sheet-metal, such as brassor steel plate. Rings 0, are flaring in cross section'and are provided with upper and lower flanges a, extending in opposite directions, each ring engaging a corresponding annular shoulder or abutment b of the valve casing. The

organs are pressed by means of coil-springs c,

which on the one hand bear against flanged or a similar contriv'ance of the valve cham-' ber or pump body and on the other hand against the rims at of the'organs a, on'the surfaces 6, and their rims ct are pressed into close engagement, by which means they shut up an annular slit 0 provided in the valve chamber. 'The annular slit 6 is shaped in such a way, that the current of the liquid, passing in the direction of the arrow, is utilised to pass, practically without friction nor contraction, from the axial into the radial direction, and the current of the liquid is not subject to any further turning aside, when issuing between the rims a of the parts 0. because of the fact that these,

yielding in. upward and downward direcunchecked.

In the form oi: embodiment, shown in Big.

ticn, allow the disk of the liquid to traverse against the body and the plate n by means rnunsanuuna ,ZAND, orro HOFFMANEJOF nurseries. GER-MANY.

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Specification of Letters Patent. 1 Patented lilay 28,1912. Application fiIedQcember 31, 1908. Serial No. 470,146. r i

2, the closing capacity of the bipartite closing member a is effected by two india rubber rings f of V-shaped' cross section, which are inserted, so as to exert a slight straln into correspondingly fashioned slots of the valve chamber and the two members are closely pressed with their rims a, against. each other. The upper part of the valve chamber forms an air cap it. Thisarrangement has agreat infiuehce in view to obtain a steady operation free from shocks of rapidly rotating pu'mps'increasing their height of suction, as the quantity of water to be accelerated at each stroke, is strongly reduced.

rings. This arrangement serves the purpose to secure a tight lockeven in the case of dirty liquids.

In Fig. 5 a blower-valve is shown in which ring-shaped members f are placed above the exit-passage in such a manner, that between them and the cast body 9 annular slits e remain. The members j, which can be carried by means ofribs of the cast bodies 9 are embraced by the ring-shaped closing members a having an inverted 'V- shaped cross section and being pressed with their rims a by means of coil springs c, which at their top bear on abutments 6, against the cast bodies 9 In the form of construction of the Fig. 6 the ring shaped member f arranged above the ring-passage or -chamber 72, is provided with an opening for the passage or a slit Z, and above it a member 112 provided with av passage is arranged and above this a ring plate n in. such a way, that betwixt the plate and the member an annular slits c are left, enibraced in the same manner like the annular slit 1: by riug-sha 'ied closing devices (i above the correspondingly 'fasliioned'body The closing devices (i are pressed of springs c, which on the one hand bear against the bottom and on the other hand against the top closing members.

e claim 1. A device of the character described,

comprising a casing having an axially disposed inlet port and an annular circumferential outlet port, said casing being provided with a beveled flange at said outlet port, a rigid annulus freely movable in an axial direction and adapted to enga e said flange, and a spring encompassing t ercasing and made in a separate piece from said annulus, said spring engaging said casing and also said annulus, whereby said annulus is adapted to be projected across the outlet port and to recede therefrom without being subjected to bending strain.

2. A device of the character described,

comprising a grooved valve casing having a 15 discharge slit, a pair of annular lipsprojecting beyond said slit and movable? substantially at right an les to the outflowing liquid current, and exible rings seated m'the casing-grooves and engaging the lips.

PAUL BRENNER.

OTTO HOFFMANN'.

Witnesses:

BESSIE F. DUNLAr, R. H. DUNLAP. 

